coal explore的用法和樣例：
例句
- In coal mines,coal exploitation and environmental control shall be sychronized.
煤礦建設應當堅持煤炭開發與環境治理同步進行。 - China with a history of six or seven thousand years of development of coal utilization is one of those countries that first recognised and utilized coal.
摘要中國是世界上最早認識和利用煤炭的國家之一，有長達六七千年的煤炭開發利用史。
